AY Honors/Model Boats/Answer Key
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< AY Honors | Model BoatsAY Honors/Model Boats/Answer Key /
1. Do two of the following:
a. Purchase and build one kit for a sailboat 10 to 15 inches (25.4 to 38.1 cm) long and about four to five inches wide and operate boat on the water for at least two minutes.
b. Build a model boat with an electric motor from your own plans or from a kit, size 10 to 18 inches, (25.4 to 45.7 cm) and operate the boat for three to five minutes.
c. Build a model boat 18 to 30 inches (45.7 to 76.2 cm) long from your own plans or from a kit. Install a small bore internal combustion engine .029 or .049 and operate for at least two successful runs of three to five minutes each. Record in writing the operating characteristics of the model and state what you did to improve its performance.
2. Identify and define these words:
the displacement of any boat is the amount of water the hull displaces when it floats. The weight of the water being displaced will be equal to the weight of the boat...assuming it's still floating, that is.
b. Center of gravity
c. Propeller pitch
"the distance a propeller would move in one revolution if it were moving through a soft solid, like a screw through wood." For example, a 21-pitch propeller would move forward 21 inches in one revolution.
